Lexmark MS711 - Page 320

Action Yes No
Step 3
Check the lower interface cable. If damaged, then replace the lower
interface cable. Go to “HCOE lower interface cable removal” on
page 593.
Remove the left cover. Reseat the cable (J1) on the controller PCBA, then
POR the machine.
Does the error remain?
Go to step 4. The problem is solved.
Step 4
Check the auto connector end of the printer underneath the option.
Is it free of damage or obstructions?
Go to step 5. Replace the upper
interface cable of the
base printer.
Step 5
Check the following:
• Check the rear door for damage. Open the rear door, and then check
if it closes properly.
• Check the rear door rollers for damage. Turn the rear door rollers and
check if they have no problem moving.
Are the rear door components functional and free of damage?
Go to step 6. Replace the HCOE rear
door. See “HCOE rear
door removal” on
page 585.
Step 6
a Reseat the connector of the sensor (HCOE rear door interlock). To
access the sensor, see “Sensor (HCOE rear door interlock) removal”
on page 599.
b Reseat the same sensor cable J14 on the controller PCBA.
c POR the machine.
Does the error remain?
Replace the sensor
(HCOE rear door
interlock). See “Sensor
(HCOE rear door
interlock) removal” on
page 599.
If the error persists,
then go to step 7.
The problem is solved.
Step 7
Reseat all connectors on the controller PCBA, then POR the machine.
Does the error remain?
Replace the controller
PCBA. See “HCOE
controller PCBA
removal” on page
591.
If the error persists,
then replace the HCOE.
See “High capacity
output expander
option removal” on
page 584.
The problem is solved.
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Diagnostic information
320